There is no such a closed world-class university. Internationalization is not only one of the important marks of a top college，but also an important developing direction of the higher education in 21th century，and international strategy has more realistic significance under the “Double World-class” construction background. This paper chooses the newest strategic planning of ten top universities in six countries on four continents in the world and analyze their different features from university mission vision，teaching and student experience，science research and social service，to give some advices for universities in China on their international strategy in the process of “Double World-class” construction，which are to better integrate internationalization into their goal for top，make it better sever for this goal and strengthen output and form contrasting style at the higher stage of internationalization.